Sri Sivalogathyagar Temple is a Lord Shiva temple in Achalpuram in, Nagapattinam district of Tamil Nadu. This is a padal petra sthalam.
The temple was constructed during 8th century AD. It has a 100 pillar temple and has a 5 tiered Raja gopuram.
According to legends, the Lord Shiva here was worshipped by Sundarar. He has attained the feet of Lord Shiva along with his wife in this temple.

Padal Petra Sthalam
This is one of the 276 temples mentioned in Devaram which are collections of songs of these temples by Thirunavukkarasar, Thirugnasambandar, Sundarar and Manickavasagar. These collection of songs composed by the great saints describe many of these temples, deities, history, legends, sthala vruksha, temple ponds and other details about the god and temple.